pkgs/apply-config: fixups

the nix-env logic was still broken. It seems to have extremely weird
failure modes under which it does not report errors when doing
nix-env --set, or else the switch-to-configuration.pl script does not
properly install the boot loader entry when it was installed via --set
instead of --install.

I'm not entirely clear on why yet, will need some investigating.

1 files changed, 8 insertions, 7 deletions

diff --git a/pkgs/apply-config/apply-config b/pkgs/apply-config/apply-config
index c827823..c411ce1 100755
--- a/pkgs/apply-config/apply-config
+++ b/pkgs/apply-config/apply-config
@@ -33,18 +33,19 @@ Options:
 "))
 
 
-(define (run-command cmd)
-  (when verbose
-    (display cmd (standard-error-port)))
-  (do-process! cmd))
-
 (define (log-msg msg)
-  (display msg (standard-error-port)))
+  (display (format "apply-config: ~a\n" msg) (standard-error-port)))
 
 (define (log-verbose msg)
   (when verbose
     (log-msg msg)))
 
+(define (run-command cmd)
+  (when verbose
+    (log-msg (format "running ~a" cmd)))
+  (do-process! cmd))
+
+
 (define (main args)
   (let-args
    (cdr args)
@@ -102,7 +103,7 @@ Options:
 
 (define (install-in-env built-config)
   (define cmd
-   `(nix-env -p /nix/var/nix/profiles/system --set ,built-config))
+   `(sudo nix-env -p /nix/var/nix/profiles/system --install ,built-config))
 
   (if (or (equal? action 'switch) (equal? action 'boot))
     (run-command cmd)